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Scattering of light from metallic films with a corrugated surface: Magnetic field effects in the Voigt geometry
Author(s) -
JacoboEscobar J. H.,
Cocoletzi Gregorio H.
Publication year - 2005
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200541237
Subject(s) - superlattice , condensed matter physics , antisymmetric relation , scattering , magnetic field , physics , field (mathematics) , amplitude , maxima and minima , surface (topology) , optics , materials science , geometry , quantum mechanics , mathematical analysis , mathematics , pure mathematics , mathematical physics
We study the scattering of electromagnetic waves from a corrugated surface of a metallic film, which has a flat surface in contact with a semi‐infinite superlattice. External magnetic fields are accounted for, in the Voigt configuration, to calculate the scattered field amplitudes up to first order on the corrugation height. Two‐zero order minima and two‐first order peaks are obtained as a result of the coupling of the incident light with the magnetoplasmons at the corrugated surface. The peaks are associated with the p = ±1 terms in the expansion of the fields. We find that the splitting of the minima is affected by the external field and the superlattice. In the absence of the superlattice the external field splits the symmetric and antisymmetric film modes, however, the presence of the superlattice closes the gap. The gap also depends on the angle of incidence. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)